./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d83e632829c1e193271bd76b90e08187eb94c70000e5f11d7aea101b3ec9a9e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:32:53,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:32:53,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:32:53,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:32:53,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:32:53,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:32:53,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:32:53,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:32:53,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:32:53,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:32:53,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:32:53,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:32:53,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:32:53,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:32:53,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:32:53,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:32:53,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:32:53,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:32:53,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:32:53,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:32:53,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:32:53,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:32:53,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:32:53,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:32:53,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:32:53,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:32:53,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:32:53,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:32:53,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:32:53,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:32:53,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:32:53,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:32:53,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:32:53,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:32:53,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:32:53,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:32:53,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:32:53,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:32:53,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:32:53,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:32:53,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:32:53,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 05:32:53,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:32:53,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:32:53,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:32:53,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:32:53,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:32:53,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:32:53,608 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:32:53,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:32:53,609 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:32:53,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:32:53,609 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:32:53,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:32:53,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:32:53,610 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:32:53,610 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:32:53,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:32:53,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:32:53,610 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:32:53,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 05:32:53,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:32:53,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:32:53,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:32:53,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:32:53,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:32:53,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d83e632829c1e193271bd76b90e08187eb94c70000e5f11d7aea101b3ec9a9e6 [2022-12-14 05:32:53,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:32:53,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:32:53,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:32:53,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:32:53,813 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:32:53,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2022-12-14 05:32:56,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:32:56,564 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:32:56,564 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2022-12-14 05:32:56,571 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/data/b3c888b5b/326231ef5e4c45108007095e3c858a75/FLAG9052ae2ef [2022-12-14 05:32:56,582 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/data/b3c888b5b/326231ef5e4c45108007095e3c858a75 [2022-12-14 05:32:56,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:32:56,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:32:56,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:32:56,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:32:56,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:32:56,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229f9513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56, skipping insertion in model container [2022-12-14 05:32:56,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:32:56,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:32:56,803 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/sv-benchmarks/c/list-simple/sll2c_append_unequal.i[24587,24600] [2022-12-14 05:32:56,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:32:56,812 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:32:56,841 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/sv-benchmarks/c/list-simple/sll2c_append_unequal.i[24587,24600] [2022-12-14 05:32:56,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:32:56,859 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:32:56,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56 WrapperNode [2022-12-14 05:32:56,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:32:56,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:32:56,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:32:56,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:32:56,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,891 INFO L138 Inliner]: procedures = 127, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-12-14 05:32:56,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:32:56,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:32:56,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:32:56,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:32:56,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:32:56,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:32:56,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:32:56,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:32:56,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (1/1) ... [2022-12-14 05:32:56,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:32:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:32:56,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:32:56,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 05:32:56,975 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:32:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:32:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:32:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:32:57,068 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:32:57,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:32:57,422 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:32:57,465 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:32:57,465 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 05:32:57,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:32:57 BoogieIcfgContainer [2022-12-14 05:32:57,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:32:57,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:32:57,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:32:57,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:32:57,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:32:56" (1/3) ... [2022-12-14 05:32:57,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae49094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:32:57, skipping insertion in model container [2022-12-14 05:32:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:56" (2/3) ... [2022-12-14 05:32:57,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae49094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:32:57, skipping insertion in model container [2022-12-14 05:32:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:32:57" (3/3) ... [2022-12-14 05:32:57,473 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2022-12-14 05:32:57,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:32:57,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2022-12-14 05:32:57,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:32:57,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1359bef2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:32:57,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-12-14 05:32:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 110 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:32:57,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:57,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:32:57,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 247671639, now seen corresponding path program 1 times [2022-12-14 05:32:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:57,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287099374] [2022-12-14 05:32:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:57,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:57,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287099374] [2022-12-14 05:32:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287099374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:57,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:57,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:32:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847543685] [2022-12-14 05:32:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:57,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:32:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:32:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:57,760 INFO L87 Difference]: Start difference. First operand has 115 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 110 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:57,865 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2022-12-14 05:32:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:32:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 05:32:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:57,872 INFO L225 Difference]: With dead ends: 113 [2022-12-14 05:32:57,873 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 05:32:57,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:57,876 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:57,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 05:32:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-12-14 05:32:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 106 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2022-12-14 05:32:57,904 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 5 [2022-12-14 05:32:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:57,904 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2022-12-14 05:32:57,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2022-12-14 05:32:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:32:57,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:57,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:32:57,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:32:57,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash 247671640, now seen corresponding path program 1 times [2022-12-14 05:32:57,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:57,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111485960] [2022-12-14 05:32:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:57,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111485960] [2022-12-14 05:32:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111485960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:57,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:32:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944665803] [2022-12-14 05:32:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:32:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:32:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:57,998 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:58,091 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2022-12-14 05:32:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:32:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 05:32:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:58,092 INFO L225 Difference]: With dead ends: 109 [2022-12-14 05:32:58,092 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 05:32:58,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:58,093 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:58,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 164 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 05:32:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-12-14 05:32:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 51 states have (on average 2.215686274509804) internal successors, (113), 104 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2022-12-14 05:32:58,100 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 5 [2022-12-14 05:32:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:58,100 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2022-12-14 05:32:58,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2022-12-14 05:32:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:32:58,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:58,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:58,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:32:58,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1289608576, now seen corresponding path program 1 times [2022-12-14 05:32:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:58,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526781709] [2022-12-14 05:32:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:58,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:58,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526781709] [2022-12-14 05:32:58,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526781709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:58,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:58,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:32:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314746996] [2022-12-14 05:32:58,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:58,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:32:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:32:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:58,163 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:32:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:58,198 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2022-12-14 05:32:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:32:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-14 05:32:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:58,200 INFO L225 Difference]: With dead ends: 115 [2022-12-14 05:32:58,200 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 05:32:58,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:58,201 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:58,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 203 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:32:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 05:32:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2022-12-14 05:32:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 105 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-12-14 05:32:58,208 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 10 [2022-12-14 05:32:58,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:58,208 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-12-14 05:32:58,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:32:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-12-14 05:32:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:32:58,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:58,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:32:58,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2085056258, now seen corresponding path program 1 times [2022-12-14 05:32:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786173352] [2022-12-14 05:32:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:32:58,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786173352] [2022-12-14 05:32:58,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786173352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:58,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:58,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:32:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374144172] [2022-12-14 05:32:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:32:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:32:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:32:58,306 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:32:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:58,465 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-12-14 05:32:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:32:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-12-14 05:32:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:58,468 INFO L225 Difference]: With dead ends: 110 [2022-12-14 05:32:58,468 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 05:32:58,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:32:58,469 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 9 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 318 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 05:32:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-12-14 05:32:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 52 states have (on average 2.173076923076923) internal successors, (113), 104 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2022-12-14 05:32:58,476 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 17 [2022-12-14 05:32:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:58,476 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2022-12-14 05:32:58,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:32:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2022-12-14 05:32:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:32:58,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:58,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:32:58,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2085056257, now seen corresponding path program 1 times [2022-12-14 05:32:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:58,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295523321] [2022-12-14 05:32:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:32:58,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:58,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295523321] [2022-12-14 05:32:58,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295523321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:58,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:58,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:32:58,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465212340] [2022-12-14 05:32:58,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:32:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:32:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:32:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:32:58,639 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:32:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:58,790 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2022-12-14 05:32:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:32:58,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-12-14 05:32:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:58,791 INFO L225 Difference]: With dead ends: 109 [2022-12-14 05:32:58,792 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 05:32:58,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:32:58,792 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 7 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:58,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 342 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 05:32:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2022-12-14 05:32:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 52 states have (on average 2.1538461538461537) internal successors, (112), 103 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:32:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2022-12-14 05:32:58,797 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 17 [2022-12-14 05:32:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:58,797 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2022-12-14 05:32:58,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:32:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2022-12-14 05:32:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:32:58,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:58,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:32:58,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:32:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2010881217, now seen corresponding path program 1 times [2022-12-14 05:32:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:32:58,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151400210] [2022-12-14 05:32:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:32:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:32:58,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:32:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151400210] [2022-12-14 05:32:58,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151400210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:32:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371926561] [2022-12-14 05:32:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:32:58,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:32:58,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:32:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:59,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:32:59,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:59,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:32:59,135 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_158 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_158))) is different from true [2022-12-14 05:32:59,155 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_158 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_158))) is different from true [2022-12-14 05:32:59,173 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:32:59,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-14 05:32:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-12-14 05:32:59,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:32:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:32:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371926561] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:32:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [701369807] [2022-12-14 05:32:59,479 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:32:59,479 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:32:59,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:32:59,486 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:32:59,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:32:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:32:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:32:59,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:32:59,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:32:59,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:32:59,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:32:59,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:32:59,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:32:59,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:32:59,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:32:59,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:32:59,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:32:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:32:59,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:32:59,842 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:32:59,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:32:59,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:32:59,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:00,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:00,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:00,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:00,033 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,034 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,037 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,038 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,039 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,111 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:00,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:00,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:00,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:00,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:00,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:00,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:00,339 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,340 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,342 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,343 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,345 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:00,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:00,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:00,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:00,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:00,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 117 [2022-12-14 05:33:00,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:00,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-12-14 05:33:00,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:00,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 113 [2022-12-14 05:33:00,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:00,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:00,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:00,825 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-12-14 05:33:01,063 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:02,583 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1373#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (not (= (select |#valid| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) 1)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:02,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:02,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:02,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18 [2022-12-14 05:33:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984601753] [2022-12-14 05:33:02,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:02,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 05:33:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 05:33:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=699, Unknown=2, NotChecked=110, Total=930 [2022-12-14 05:33:02,585 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:33:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:02,856 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2022-12-14 05:33:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:33:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2022-12-14 05:33:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:02,857 INFO L225 Difference]: With dead ends: 124 [2022-12-14 05:33:02,857 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 05:33:02,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=130, Invalid=746, Unknown=2, NotChecked=114, Total=992 [2022-12-14 05:33:02,858 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 485 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:02,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 438 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 516 Invalid, 0 Unknown, 228 Unchecked, 0.2s Time] [2022-12-14 05:33:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 05:33:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2022-12-14 05:33:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 102 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2022-12-14 05:33:02,862 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 19 [2022-12-14 05:33:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:02,862 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2022-12-14 05:33:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:33:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2022-12-14 05:33:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:33:02,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:02,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:02,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:03,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:03,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2010881218, now seen corresponding path program 1 times [2022-12-14 05:33:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:03,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539479141] [2022-12-14 05:33:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:03,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539479141] [2022-12-14 05:33:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539479141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746328707] [2022-12-14 05:33:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:03,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:03,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:03,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:33:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:03,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 05:33:03,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:03,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:03,475 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_236 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_236) |c_#length|)))) is different from true [2022-12-14 05:33:03,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:33:03,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:03,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:33:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 05:33:03,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:03,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746328707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35179641] [2022-12-14 05:33:03,633 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:33:03,633 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:03,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:03,633 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:03,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:03,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:03,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:03,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:03,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:03,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:03,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:03,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:03,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:03,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:03,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:03,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:03,879 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:03,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:04,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:04,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:04,144 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,147 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,150 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,220 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:04,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:04,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:04,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:04,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:04,435 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,437 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,438 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,440 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:04,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:04,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:04,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:04,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:04,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:04,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:04,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:04,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:04,893 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-12-14 05:33:05,079 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:06,652 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1706#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (< (select |#length| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 4)) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:06,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:06,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:06,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-12-14 05:33:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618237112] [2022-12-14 05:33:06,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:06,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 05:33:06,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 05:33:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=720, Unknown=2, NotChecked=54, Total=870 [2022-12-14 05:33:06,654 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 05:33:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:07,184 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2022-12-14 05:33:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:33:07,185 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2022-12-14 05:33:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:07,186 INFO L225 Difference]: With dead ends: 107 [2022-12-14 05:33:07,186 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 05:33:07,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=933, Unknown=2, NotChecked=62, Total=1122 [2022-12-14 05:33:07,187 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 201 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:07,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 560 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 801 Invalid, 0 Unknown, 114 Unchecked, 0.4s Time] [2022-12-14 05:33:07,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 05:33:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2022-12-14 05:33:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 101 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-12-14 05:33:07,191 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 19 [2022-12-14 05:33:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-12-14 05:33:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 05:33:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-12-14 05:33:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 05:33:07,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:07,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:07,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:07,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:07,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:07,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 321073407, now seen corresponding path program 1 times [2022-12-14 05:33:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:07,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878170152] [2022-12-14 05:33:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:33:07,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878170152] [2022-12-14 05:33:07,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878170152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421650908] [2022-12-14 05:33:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:07,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:07,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:07,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:33:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:07,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 05:33:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:07,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:07,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:07,874 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_353 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_353))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-12-14 05:33:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:07,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 05:33:07,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:07,912 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_354 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_354))))) is different from true [2022-12-14 05:33:07,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:07,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 05:33:07,941 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2022-12-14 05:33:07,954 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:33:07,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 05:33:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 12 not checked. [2022-12-14 05:33:07,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:08,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421650908] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:08,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [783248948] [2022-12-14 05:33:08,114 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 05:33:08,114 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:08,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:08,114 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:08,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:08,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:08,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:08,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:08,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:08,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:08,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:08,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:08,342 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:08,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:08,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:08,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:08,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:08,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:08,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:08,545 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,546 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,547 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,549 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,608 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:08,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:08,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:08,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:08,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:08,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:08,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:08,815 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,817 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,818 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,819 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,820 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:08,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:08,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:08,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:08,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 117 [2022-12-14 05:33:09,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-12-14 05:33:09,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2022-12-14 05:33:09,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:09,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:09,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:09,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,267 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:09,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:09,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:09,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:09,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,302 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:09,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:09,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,393 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:09,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:09,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:09,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:09,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:09,419 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:09,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:09,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:09,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:09,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:09,522 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 05:33:09,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:09,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:09,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:09,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:09,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:09,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:09,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:09,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:09,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:09,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:09,582 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:11,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2074#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (not (= (select |#valid| |ULTIMATE.start_sll_circular_append_~head#1.base|) 1)) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:11,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:11,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:11,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2022-12-14 05:33:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702499696] [2022-12-14 05:33:11,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:11,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 05:33:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 05:33:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=774, Unknown=3, NotChecked=174, Total=1056 [2022-12-14 05:33:11,317 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 16 states, 12 states have (on average 2.75) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:11,617 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-12-14 05:33:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:33:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.75) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2022-12-14 05:33:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:11,618 INFO L225 Difference]: With dead ends: 114 [2022-12-14 05:33:11,618 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 05:33:11,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=880, Unknown=3, NotChecked=186, Total=1190 [2022-12-14 05:33:11,619 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 263 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:11,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 300 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 473 Invalid, 0 Unknown, 306 Unchecked, 0.3s Time] [2022-12-14 05:33:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 05:33:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2022-12-14 05:33:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 92 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2022-12-14 05:33:11,625 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 27 [2022-12-14 05:33:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:11,625 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2022-12-14 05:33:11,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.75) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2022-12-14 05:33:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 05:33:11,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:11,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:11,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:33:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 05:33:11,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash 321073408, now seen corresponding path program 1 times [2022-12-14 05:33:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:11,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048016345] [2022-12-14 05:33:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:12,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:12,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048016345] [2022-12-14 05:33:12,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048016345] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:12,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71567773] [2022-12-14 05:33:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:12,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:12,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:12,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:12,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:33:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:12,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:33:12,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:12,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:12,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:12,434 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_473 Int)) (= |c_#length| (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_473))))) is different from true [2022-12-14 05:33:12,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:33:12,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:12,481 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_474 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_474) |c_#length|)))) is different from true [2022-12-14 05:33:12,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:33:12,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:12,557 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_475 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_475) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-12-14 05:33:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:33:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2022-12-14 05:33:12,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:12,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71567773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1634753166] [2022-12-14 05:33:12,639 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 05:33:12,640 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:12,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:12,640 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:12,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:12,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:12,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:12,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:12,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:12,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:12,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:12,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:12,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:12,855 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:12,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:12,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:12,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:12,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:12,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:12,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:12,989 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:12,990 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:12,991 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:12,992 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:12,994 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:13,053 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:13,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:13,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:13,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:13,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:13,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:13,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:13,209 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:13,210 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:13,211 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:13,212 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:13,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:13,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:13,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:13,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 117 [2022-12-14 05:33:13,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-12-14 05:33:13,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 113 [2022-12-14 05:33:13,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:13,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:13,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:13,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,642 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:13,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:13,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:13,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,661 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:13,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:13,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:13,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:13,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,778 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:13,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:13,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:13,790 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:13,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:13,921 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 05:33:13,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:13,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:13,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:13,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:13,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:13,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:13,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:13,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:13,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:16,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2411#(and (< (select |#length| |ULTIMATE.start_sll_circular_append_~head#1.base|) (+ |ULTIMATE.start_sll_circular_append_~head#1.offset| 4)) (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 0) 0) (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_append_~head#1.base| |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 0) 0) (= |ULTIMATE.start_sll_circular_append_~data#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 4)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| |ULTIMATE.start_sll_circular_append_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (= |ULTIMATE.start_sll_circular_append_#in~data#1| |ULTIMATE.start_sll_circular_append_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= 8 (select |#length| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (< |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:16,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:16,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:16,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 17 [2022-12-14 05:33:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793423645] [2022-12-14 05:33:16,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 05:33:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 05:33:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=890, Unknown=3, NotChecked=186, Total=1190 [2022-12-14 05:33:16,198 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 19 states, 13 states have (on average 3.076923076923077) internal successors, (40), 16 states have internal predecessors, (40), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:33:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:16,579 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2022-12-14 05:33:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:33:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 3.076923076923077) internal successors, (40), 16 states have internal predecessors, (40), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2022-12-14 05:33:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:16,580 INFO L225 Difference]: With dead ends: 105 [2022-12-14 05:33:16,580 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 05:33:16,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=1062, Unknown=3, NotChecked=204, Total=1406 [2022-12-14 05:33:16,582 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 338 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:16,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 186 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 369 Invalid, 0 Unknown, 333 Unchecked, 0.3s Time] [2022-12-14 05:33:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 05:33:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-12-14 05:33:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 83 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2022-12-14 05:33:16,584 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 27 [2022-12-14 05:33:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:16,585 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2022-12-14 05:33:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 3.076923076923077) internal successors, (40), 16 states have internal predecessors, (40), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:33:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2022-12-14 05:33:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 05:33:16,585 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:16,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:16,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:33:16,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:16,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -686100992, now seen corresponding path program 1 times [2022-12-14 05:33:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204570821] [2022-12-14 05:33:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:33:16,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204570821] [2022-12-14 05:33:16,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204570821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:16,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:16,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:33:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788559672] [2022-12-14 05:33:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:33:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:33:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:33:16,882 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:16,990 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2022-12-14 05:33:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:33:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-12-14 05:33:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:16,991 INFO L225 Difference]: With dead ends: 103 [2022-12-14 05:33:16,992 INFO L226 Difference]: Without dead ends: 103 [2022-12-14 05:33:16,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:33:16,992 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:16,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 193 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-14 05:33:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2022-12-14 05:33:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.7307692307692308) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-12-14 05:33:16,996 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 29 [2022-12-14 05:33:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:16,997 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-12-14 05:33:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-12-14 05:33:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 05:33:16,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:16,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:33:16,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash -686100991, now seen corresponding path program 1 times [2022-12-14 05:33:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222704678] [2022-12-14 05:33:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:33:17,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:17,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222704678] [2022-12-14 05:33:17,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222704678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:17,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:17,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:33:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001452458] [2022-12-14 05:33:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:17,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:33:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:33:17,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:33:17,143 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:17,247 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2022-12-14 05:33:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:33:17,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-12-14 05:33:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:17,248 INFO L225 Difference]: With dead ends: 84 [2022-12-14 05:33:17,248 INFO L226 Difference]: Without dead ends: 84 [2022-12-14 05:33:17,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:33:17,248 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 74 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:17,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 206 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-14 05:33:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-12-14 05:33:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 79 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2022-12-14 05:33:17,251 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 29 [2022-12-14 05:33:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:17,251 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2022-12-14 05:33:17,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2022-12-14 05:33:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:33:17,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:17,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:17,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 05:33:17,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash 205719484, now seen corresponding path program 1 times [2022-12-14 05:33:17,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:17,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799676552] [2022-12-14 05:33:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:17,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799676552] [2022-12-14 05:33:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799676552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368416137] [2022-12-14 05:33:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:17,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:17,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:33:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 05:33:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:17,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 05:33:17,883 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_703 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_703))) (exists ((v_ArrVal_705 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_705))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 05:33:17,900 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-12-14 05:33:17,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:33:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:17,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:17,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 05:33:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 05:33:17,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:17,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368416137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:17,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:33:17,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2022-12-14 05:33:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843877137] [2022-12-14 05:33:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:17,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:33:17,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:33:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=365, Unknown=2, NotChecked=38, Total=462 [2022-12-14 05:33:17,932 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:18,268 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2022-12-14 05:33:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:33:18,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-14 05:33:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:18,269 INFO L225 Difference]: With dead ends: 133 [2022-12-14 05:33:18,269 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 05:33:18,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=436, Unknown=2, NotChecked=42, Total=552 [2022-12-14 05:33:18,269 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 76 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:18,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 578 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 618 Invalid, 3 Unknown, 109 Unchecked, 0.3s Time] [2022-12-14 05:33:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 05:33:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 83. [2022-12-14 05:33:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 78 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-12-14 05:33:18,272 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 30 [2022-12-14 05:33:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:18,273 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-12-14 05:33:18,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-12-14 05:33:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:33:18,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:18,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:18,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:33:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:18,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash 205719485, now seen corresponding path program 1 times [2022-12-14 05:33:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620174344] [2022-12-14 05:33:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:19,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620174344] [2022-12-14 05:33:19,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620174344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437716972] [2022-12-14 05:33:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:19,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:19,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:19,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:19,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:33:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:19,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-14 05:33:19,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:19,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-12-14 05:33:19,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:19,499 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_821 (Array Int Int)) (|node_create_~temp~0#1.base| Int) (v_ArrVal_822 (Array Int Int))) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_821) |c_#memory_$Pointer$.base|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_822)))) is different from true [2022-12-14 05:33:19,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-12-14 05:33:19,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-12-14 05:33:19,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-12-14 05:33:19,523 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 05:33:19,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 05:33:19,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-14 05:33:19,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 05:33:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-12-14 05:33:19,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:20,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437716972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263913529] [2022-12-14 05:33:20,423 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 05:33:20,423 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:20,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:20,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:20,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:20,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:20,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:20,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:20,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:20,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:20,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:20,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:20,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:20,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:20,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:20,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:20,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,560 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:20,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:20,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:20,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:20,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,629 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:20,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:20,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:20,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:20,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:20,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:20,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:33:20,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:20,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:33:20,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:20,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-12-14 05:33:20,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:20,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:20,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:20,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:20,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:21,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:21,038 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:21,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:21,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:21,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:21,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:21,066 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:21,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:21,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:21,119 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:21,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:21,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:21,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:21,147 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:21,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:21,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:33:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:21,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:21,309 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 13 for LOIs [2022-12-14 05:33:21,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:21,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:21,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:21,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:21,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:21,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:21,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:21,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:21,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:21,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:24,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3460#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 0) 0) (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_append_~head#1.base| |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 0) 0) (= |ULTIMATE.start_sll_circular_append_~data#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 4)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= (+ |ULTIMATE.start_sll_circular_append_~head#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~head#1.base|)) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (= |ULTIMATE.start_sll_circular_append_~last~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (or (not (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (not (<= (+ |ULTIMATE.start_sll_circular_append_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~last~1#1.base|)))) (= |ULTIMATE.start_main_~uneq~0#1| |ULTIMATE.start_sll_circular_append_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= |ULTIMATE.start_sll_circular_append_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~head#1.base|) 1) (= |ULTIMATE.start_sll_circular_append_#in~data#1| |ULTIMATE.start_sll_circular_append_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= 8 (select |#length| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (< |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |#StackHeapBarrier|) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|) 0))) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:24,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:24,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:24,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2022-12-14 05:33:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647600283] [2022-12-14 05:33:24,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 05:33:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 05:33:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1822, Unknown=1, NotChecked=86, Total=2070 [2022-12-14 05:33:24,316 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 25 states, 18 states have (on average 2.111111111111111) internal successors, (38), 22 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:33:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:25,427 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2022-12-14 05:33:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 05:33:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 2.111111111111111) internal successors, (38), 22 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 30 [2022-12-14 05:33:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:25,428 INFO L225 Difference]: With dead ends: 141 [2022-12-14 05:33:25,428 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 05:33:25,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=259, Invalid=2824, Unknown=1, NotChecked=108, Total=3192 [2022-12-14 05:33:25,429 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 269 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:25,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 976 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1387 Invalid, 0 Unknown, 150 Unchecked, 0.7s Time] [2022-12-14 05:33:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 05:33:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 87. [2022-12-14 05:33:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 82 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2022-12-14 05:33:25,431 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 30 [2022-12-14 05:33:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2022-12-14 05:33:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 2.111111111111111) internal successors, (38), 22 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:33:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2022-12-14 05:33:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 05:33:25,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:25,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:25,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:33:25,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 05:33:25,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1422827623, now seen corresponding path program 1 times [2022-12-14 05:33:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383391388] [2022-12-14 05:33:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:33:25,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:25,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383391388] [2022-12-14 05:33:25,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383391388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:25,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:25,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:33:25,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371000667] [2022-12-14 05:33:25,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:25,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:33:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:33:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:25,874 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 9 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:26,080 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2022-12-14 05:33:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:33:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-12-14 05:33:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:26,081 INFO L225 Difference]: With dead ends: 152 [2022-12-14 05:33:26,081 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 05:33:26,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:33:26,081 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 276 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:26,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 261 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:33:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 05:33:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2022-12-14 05:33:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 85 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2022-12-14 05:33:26,085 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 34 [2022-12-14 05:33:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2022-12-14 05:33:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2022-12-14 05:33:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 05:33:26,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:26,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:26,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 05:33:26,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1422827622, now seen corresponding path program 1 times [2022-12-14 05:33:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:26,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254179925] [2022-12-14 05:33:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:33:26,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:26,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254179925] [2022-12-14 05:33:26,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254179925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:26,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:26,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:33:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447472902] [2022-12-14 05:33:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:26,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:33:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:33:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:26,346 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 9 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:26,535 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2022-12-14 05:33:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:33:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-12-14 05:33:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:26,536 INFO L225 Difference]: With dead ends: 176 [2022-12-14 05:33:26,536 INFO L226 Difference]: Without dead ends: 176 [2022-12-14 05:33:26,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:33:26,537 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 309 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:26,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 280 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:33:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-14 05:33:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 93. [2022-12-14 05:33:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.546875) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2022-12-14 05:33:26,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 34 [2022-12-14 05:33:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:26,541 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2022-12-14 05:33:26,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2022-12-14 05:33:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 05:33:26,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:26,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 05:33:26,542 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1613943111, now seen corresponding path program 1 times [2022-12-14 05:33:26,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:26,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161971568] [2022-12-14 05:33:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:33:27,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:27,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161971568] [2022-12-14 05:33:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161971568] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:27,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035580855] [2022-12-14 05:33:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:27,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:27,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:27,434 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:27,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:33:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:27,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-14 05:33:27,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:27,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:27,669 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:27,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:33:27,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:27,781 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:33:27,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2022-12-14 05:33:27,821 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:27,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2022-12-14 05:33:27,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:27,898 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (exists ((v_ArrVal_1089 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1089) |c_#memory_$Pointer$.offset|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1090 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1090))))) is different from true [2022-12-14 05:33:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:27,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:33:27,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:27,916 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:33:27,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 43 [2022-12-14 05:33:27,933 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:33:27,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 52 [2022-12-14 05:33:27,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:28,072 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 25 [2022-12-14 05:33:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:33:28,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:28,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035580855] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:28,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [628816216] [2022-12-14 05:33:28,244 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:33:28,244 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:28,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:28,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:28,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:28,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:28,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:28,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:28,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:28,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:28,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:28,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:28,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:28,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:28,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,419 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:28,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,475 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:28,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:28,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:28,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:28,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,600 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:28,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,655 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:28,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:28,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:33:28,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:28,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:33:28,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:28,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:33:28,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,924 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:28,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:28,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:28,987 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:28,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:29,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:29,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:29,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:29,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:29,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:29,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,096 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:29,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:29,142 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:33:29,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:33:29,158 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:33:29,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:33:29,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:29,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,199 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:29,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:29,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:33:29,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:33:29,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,270 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:29,285 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:29,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,297 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:29,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,324 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:29,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,370 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:29,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:33:29,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:33:29,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:29,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,413 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:29,426 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:29,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:29,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,953 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:29,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:29,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:29,985 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 13 for LOIs [2022-12-14 05:33:29,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:29,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:30,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:30,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:30,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:30,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:30,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:30,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:30,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:30,028 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:35,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4437#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_sll_circular_append_~last~1#1.base|) 1)) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:35,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:35,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2022-12-14 05:33:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411825906] [2022-12-14 05:33:35,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 05:33:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 05:33:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2873, Unknown=2, NotChecked=108, Total=3192 [2022-12-14 05:33:35,155 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 36 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 30 states have internal predecessors, (53), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:33:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:36,499 INFO L93 Difference]: Finished difference Result 217 states and 248 transitions. [2022-12-14 05:33:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 05:33:36,499 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 30 states have internal predecessors, (53), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2022-12-14 05:33:36,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:36,500 INFO L225 Difference]: With dead ends: 217 [2022-12-14 05:33:36,501 INFO L226 Difference]: Without dead ends: 217 [2022-12-14 05:33:36,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=327, Invalid=4097, Unknown=2, NotChecked=130, Total=4556 [2022-12-14 05:33:36,502 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 384 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:36,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1429 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1855 Invalid, 0 Unknown, 121 Unchecked, 1.0s Time] [2022-12-14 05:33:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-12-14 05:33:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 108. [2022-12-14 05:33:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 101 states have internal predecessors, (116), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 05:33:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2022-12-14 05:33:36,505 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 34 [2022-12-14 05:33:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:36,505 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2022-12-14 05:33:36,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 30 states have internal predecessors, (53), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:33:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2022-12-14 05:33:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 05:33:36,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:36,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:36,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:33:36,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 05:33:36,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1613943110, now seen corresponding path program 1 times [2022-12-14 05:33:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:36,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902599697] [2022-12-14 05:33:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:33:37,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:37,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902599697] [2022-12-14 05:33:37,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902599697] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:37,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393417847] [2022-12-14 05:33:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:37,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:37,782 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:37,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:33:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:37,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-14 05:33:37,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:37,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:38,129 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:38,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 05:33:38,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:38,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:38,315 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:33:38,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 52 [2022-12-14 05:33:38,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 05:33:38,374 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:38,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 34 [2022-12-14 05:33:38,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:38,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:38,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:38,501 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1226 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1226))) (exists ((v_ArrVal_1222 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1222) |c_#length|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1225 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1225) |c_#memory_$Pointer$.offset|)))) is different from true [2022-12-14 05:33:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:38,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:33:38,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:38,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-12-14 05:33:38,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:38,531 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:33:38,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 59 [2022-12-14 05:33:38,543 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 05:33:38,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 05:33:38,751 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-14 05:33:38,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 41 [2022-12-14 05:33:38,759 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 05:33:38,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-12-14 05:33:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:33:38,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393417847] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870702920] [2022-12-14 05:33:39,123 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:33:39,123 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:39,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:39,123 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:39,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:39,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:39,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:39,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:39,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:39,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:39,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:39,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:39,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:39,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:39,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,278 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,332 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:39,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:39,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:39,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,456 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,521 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:39,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:33:39,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:39,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:33:39,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:39,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:33:39,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,709 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,767 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:39,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:39,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:39,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,846 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:39,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:39,911 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:33:39,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:33:39,935 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:33:39,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:33:39,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:39,970 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:39,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:40,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:40,020 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:40,033 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:33:40,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:33:40,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,057 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,071 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,118 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:40,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,184 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:40,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,200 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:33:40,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:40,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:33:40,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:33:40,237 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:40,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:40,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,606 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:33:40,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:33:40,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:40,643 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 05:33:40,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:40,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:40,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:40,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:40,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:40,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:40,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:40,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:40,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:40,702 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:45,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4980#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (or (not (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (not (<= (+ |ULTIMATE.start_sll_circular_append_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~last~1#1.base|)))) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:45,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:45,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:45,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2022-12-14 05:33:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484504386] [2022-12-14 05:33:45,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 05:33:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 05:33:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4042, Unknown=2, NotChecked=128, Total=4422 [2022-12-14 05:33:45,623 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 42 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 34 states have internal predecessors, (56), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:33:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:48,457 INFO L93 Difference]: Finished difference Result 228 states and 258 transitions. [2022-12-14 05:33:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 05:33:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 34 states have internal predecessors, (56), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2022-12-14 05:33:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:48,458 INFO L225 Difference]: With dead ends: 228 [2022-12-14 05:33:48,458 INFO L226 Difference]: Without dead ends: 228 [2022-12-14 05:33:48,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=414, Invalid=5908, Unknown=2, NotChecked=156, Total=6480 [2022-12-14 05:33:48,461 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 389 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:48,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1945 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3008 Invalid, 1 Unknown, 127 Unchecked, 1.7s Time] [2022-12-14 05:33:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-14 05:33:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 107. [2022-12-14 05:33:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.5) internal successors, (114), 100 states have internal predecessors, (114), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 05:33:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2022-12-14 05:33:48,465 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 34 [2022-12-14 05:33:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:48,465 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2022-12-14 05:33:48,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 34 states have internal predecessors, (56), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:33:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2022-12-14 05:33:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:33:48,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:48,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:48,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 05:33:48,667 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -425404873, now seen corresponding path program 1 times [2022-12-14 05:33:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:48,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056614902] [2022-12-14 05:33:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:33:48,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:48,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056614902] [2022-12-14 05:33:48,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056614902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:48,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:48,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:33:48,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143148244] [2022-12-14 05:33:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:33:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:48,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:33:48,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:33:48,724 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:48,825 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-12-14 05:33:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:33:48,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-12-14 05:33:48,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:48,825 INFO L225 Difference]: With dead ends: 146 [2022-12-14 05:33:48,825 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 05:33:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:48,826 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 137 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 165 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 05:33:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 107. [2022-12-14 05:33:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 100 states have internal predecessors, (115), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 05:33:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-12-14 05:33:48,828 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 37 [2022-12-14 05:33:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-12-14 05:33:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-12-14 05:33:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:33:48,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:48,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 05:33:48,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -425404872, now seen corresponding path program 1 times [2022-12-14 05:33:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:48,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081343150] [2022-12-14 05:33:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:33:49,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081343150] [2022-12-14 05:33:49,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081343150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:49,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:49,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 05:33:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501075048] [2022-12-14 05:33:49,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:33:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:33:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:33:49,125 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 11 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:49,410 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2022-12-14 05:33:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:33:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-12-14 05:33:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:49,411 INFO L225 Difference]: With dead ends: 160 [2022-12-14 05:33:49,411 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 05:33:49,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:33:49,412 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 218 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 356 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:33:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 05:33:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2022-12-14 05:33:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.5119047619047619) internal successors, (127), 107 states have internal predecessors, (127), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 05:33:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-12-14 05:33:49,417 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 37 [2022-12-14 05:33:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:49,417 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-12-14 05:33:49,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-12-14 05:33:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 05:33:49,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:49,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:49,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 05:33:49,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:33:49,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash -302643592, now seen corresponding path program 1 times [2022-12-14 05:33:49,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:49,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868642787] [2022-12-14 05:33:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:49,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:33:49,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:49,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868642787] [2022-12-14 05:33:49,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868642787] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:49,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40683752] [2022-12-14 05:33:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:49,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:49,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:49,663 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:49,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:33:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:49,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 05:33:49,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:49,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:49,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:49,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:49,920 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:33:49,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:33:49,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:33:50,000 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:33:50,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 15 [2022-12-14 05:33:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:33:50,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:50,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2022-12-14 05:33:56,290 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 31 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:33:56,336 INFO L321 Elim1Store]: treesize reduction 11, result has 82.0 percent of original size [2022-12-14 05:33:56,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 683 treesize of output 660 [2022-12-14 05:33:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 05:33:59,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40683752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:59,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364077009] [2022-12-14 05:33:59,145 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 05:33:59,145 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:59,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:59,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:59,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:59,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:59,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:59,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:33:59,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:33:59,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:59,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:33:59,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:33:59,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:59,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:33:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:33:59,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:33:59,330 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:59,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:59,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:59,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:59,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:59,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:59,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:59,517 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,518 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,519 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,521 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,567 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:33:59,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:33:59,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:33:59,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:59,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:33:59,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:59,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:33:59,689 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,690 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,691 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,692 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,693 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:33:59,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:59,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:33:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:33:59,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:59,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 117 [2022-12-14 05:33:59,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:59,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-12-14 05:33:59,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:59,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2022-12-14 05:34:00,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:00,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:00,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:00,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,137 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:00,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:00,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:00,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:00,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,173 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:00,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:00,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:00,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,277 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:00,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:00,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:00,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,299 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:00,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 168 [2022-12-14 05:34:00,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,429 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:34:00,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 178 [2022-12-14 05:34:00,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,451 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 05:34:00,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 174 [2022-12-14 05:34:00,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,526 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-12-14 05:34:00,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 05:34:00,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:00,548 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:34:00,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 05:34:00,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 140 [2022-12-14 05:34:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:00,872 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 05:34:00,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:00,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:00,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:00,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:00,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:00,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:00,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:00,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:00,925 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:06,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1364077009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:06,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:34:06,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [15, 11, 10] total 55 [2022-12-14 05:34:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811977974] [2022-12-14 05:34:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:06,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 05:34:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 05:34:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2673, Unknown=1, NotChecked=0, Total=2970 [2022-12-14 05:34:06,277 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:07,389 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2022-12-14 05:34:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 05:34:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2022-12-14 05:34:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:07,390 INFO L225 Difference]: With dead ends: 137 [2022-12-14 05:34:07,390 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 05:34:07,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=296, Invalid=2673, Unknown=1, NotChecked=0, Total=2970 [2022-12-14 05:34:07,392 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 161 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:07,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 212 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 05:34:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 05:34:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2022-12-14 05:34:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 94 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-12-14 05:34:07,396 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 38 [2022-12-14 05:34:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:07,396 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-12-14 05:34:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-12-14 05:34:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 05:34:07,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:07,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:07,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:34:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:07,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:34:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2084466890, now seen corresponding path program 2 times [2022-12-14 05:34:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:07,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411472654] [2022-12-14 05:34:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:34:08,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411472654] [2022-12-14 05:34:08,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411472654] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517130487] [2022-12-14 05:34:08,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:34:08,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:08,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:08,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:08,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:34:08,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:34:08,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:08,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 107 conjunts are in the unsatisfiable core [2022-12-14 05:34:08,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:08,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:09,147 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:09,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:34:09,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:09,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:09,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:09,373 INFO L321 Elim1Store]: treesize reduction 37, result has 28.8 percent of original size [2022-12-14 05:34:09,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 49 [2022-12-14 05:34:09,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-12-14 05:34:09,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:09,462 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:34:09,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 39 [2022-12-14 05:34:09,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2022-12-14 05:34:09,542 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_1641 (Array Int Int)) (v_ArrVal_1640 (Array Int Int))) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1640)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1641)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 05:34:09,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:09,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:09,558 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 05:34:09,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 91 [2022-12-14 05:34:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:09,581 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 05:34:09,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 85 [2022-12-14 05:34:09,599 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-12-14 05:34:09,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 05:34:09,860 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-14 05:34:09,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 62 [2022-12-14 05:34:09,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:09,959 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:34:09,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 26 [2022-12-14 05:34:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:34:09,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:10,005 INFO L321 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2022-12-14 05:34:10,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-12-14 05:34:10,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517130487] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [284535401] [2022-12-14 05:34:10,145 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:34:10,145 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:34:10,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:34:10,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:34:10,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:34:10,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:34:10,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:10,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:10,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:10,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:10,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:10,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:10,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:10,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:10,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,283 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:10,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,464 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,532 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:34:10,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:10,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:34:10,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:10,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:34:10,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,711 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,777 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:10,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:10,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,850 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:10,910 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:34:10,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:34:10,931 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:34:10,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:34:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:10,961 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:10,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:10,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:11,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:34:11,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:34:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,017 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:11,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,036 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:11,054 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:11,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,081 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:11,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:11,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:34:11,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:34:11,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:11,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,149 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:11,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,166 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:11,178 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:11,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:11,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,469 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:11,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:11,500 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 22 for LOIs [2022-12-14 05:34:11,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:11,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:11,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:11,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:11,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:11,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:11,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:11,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:11,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:11,552 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:16,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6635#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_sll_circular_append_~last~1#1.base|) 1)) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 05:34:16,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:34:16,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:34:16,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 43 [2022-12-14 05:34:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725655071] [2022-12-14 05:34:16,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:16,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 05:34:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:16,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 05:34:16,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4039, Unknown=1, NotChecked=128, Total=4422 [2022-12-14 05:34:16,033 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 44 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 38 states have internal predecessors, (60), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:34:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:18,151 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2022-12-14 05:34:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 05:34:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 38 states have internal predecessors, (60), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 38 [2022-12-14 05:34:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:18,152 INFO L225 Difference]: With dead ends: 138 [2022-12-14 05:34:18,152 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 05:34:18,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=408, Invalid=5757, Unknown=1, NotChecked=154, Total=6320 [2022-12-14 05:34:18,153 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 291 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:18,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1908 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2660 Invalid, 0 Unknown, 96 Unchecked, 1.3s Time] [2022-12-14 05:34:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 05:34:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 100. [2022-12-14 05:34:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5) internal successors, (108), 95 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-12-14 05:34:18,156 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 38 [2022-12-14 05:34:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:18,157 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-12-14 05:34:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 38 states have internal predecessors, (60), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:34:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-12-14 05:34:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 05:34:18,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:18,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:18,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:34:18,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:18,359 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:34:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2084466889, now seen corresponding path program 2 times [2022-12-14 05:34:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:18,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758461300] [2022-12-14 05:34:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:34:19,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758461300] [2022-12-14 05:34:19,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758461300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690162095] [2022-12-14 05:34:19,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:34:19,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:19,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:19,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:19,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:34:19,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:34:19,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:19,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 133 conjunts are in the unsatisfiable core [2022-12-14 05:34:19,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:19,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:19,783 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:19,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:34:19,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:19,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:19,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:19,909 INFO L321 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-12-14 05:34:19,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 50 [2022-12-14 05:34:19,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-12-14 05:34:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:20,186 INFO L321 Elim1Store]: treesize reduction 68, result has 27.7 percent of original size [2022-12-14 05:34:20,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 77 [2022-12-14 05:34:20,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:20,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:20,198 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:34:20,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 49 [2022-12-14 05:34:20,209 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-14 05:34:20,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:34:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:34:21,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690162095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859434211] [2022-12-14 05:34:22,360 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:34:22,361 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:34:22,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:34:22,361 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:34:22,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:34:22,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:34:22,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:22,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:22,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:22,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:22,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:22,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:22,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:22,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:22,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,512 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:22,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:22,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,574 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:22,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:22,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:22,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,705 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:22,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:22,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,768 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:22,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:22,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:22,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:34:22,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:22,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:34:22,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:22,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:34:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:22,957 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:22,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:22,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:22,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:23,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,025 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:23,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:23,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:23,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:23,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,127 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:23,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:23,173 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:34:23,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:34:23,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:23,208 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 05:34:23,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:34:23,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,236 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:23,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,273 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:23,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,306 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:23,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:34:23,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:34:23,339 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,367 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:23,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:23,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,406 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:23,420 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:23,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,438 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:23,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:34:23,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:34:23,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 05:34:23,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,949 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:23,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:23,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:23,975 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 8 for LOIs [2022-12-14 05:34:23,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:23,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:23,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:23,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:23,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:24,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:24,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:24,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:24,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:24,012 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:29,558 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7123#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= 1 |ULTIMATE.start_sll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (or (not (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (not (<= (+ |ULTIMATE.start_sll_circular_append_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~last~1#1.base|)))) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 05:34:29,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:34:29,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:34:29,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 47 [2022-12-14 05:34:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781076022] [2022-12-14 05:34:29,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 05:34:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 05:34:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=4658, Unknown=9, NotChecked=0, Total=4970 [2022-12-14 05:34:29,560 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 47 states, 38 states have (on average 1.605263157894737) internal successors, (61), 40 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:34:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:31,749 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2022-12-14 05:34:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 05:34:31,750 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 38 states have (on average 1.605263157894737) internal successors, (61), 40 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 38 [2022-12-14 05:34:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:31,750 INFO L225 Difference]: With dead ends: 90 [2022-12-14 05:34:31,750 INFO L226 Difference]: Without dead ends: 90 [2022-12-14 05:34:31,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2237 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=548, Invalid=7453, Unknown=9, NotChecked=0, Total=8010 [2022-12-14 05:34:31,753 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 157 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:31,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1072 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1479 Invalid, 2 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 05:34:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-14 05:34:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-12-14 05:34:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 84 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2022-12-14 05:34:31,755 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 38 [2022-12-14 05:34:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:31,755 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2022-12-14 05:34:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 38 states have (on average 1.605263157894737) internal successors, (61), 40 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:34:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2022-12-14 05:34:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 05:34:31,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:31,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:31,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 05:34:31,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 05:34:31,957 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:34:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash -792186881, now seen corresponding path program 1 times [2022-12-14 05:34:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:31,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798917992] [2022-12-14 05:34:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:34:32,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:32,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798917992] [2022-12-14 05:34:32,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798917992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:32,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074673978] [2022-12-14 05:34:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:32,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:32,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:32,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:32,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:34:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:32,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 05:34:32,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:32,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-14 05:34:32,445 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_1928 (Array Int Int))) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1928) |c_#memory_$Pointer$.base|))) is different from true [2022-12-14 05:34:32,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-12-14 05:34:32,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 05:34:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-14 05:34:32,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:32,508 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1932 (Array Int Int)) (|v_node_create_~temp~0#1.base_63| Int)) (or (not (< |v_node_create_~temp~0#1.base_63| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_63| v_ArrVal_1932) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)))) is different from false [2022-12-14 05:34:32,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074673978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:32,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [278496204] [2022-12-14 05:34:32,510 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 05:34:32,510 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:34:32,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:34:32,510 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:34:32,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:34:32,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:34:32,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:32,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:32,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:32,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:32,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:32,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:32,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:32,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:32,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,657 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:32,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:32,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:32,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:32,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,716 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:34:32,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:34:32,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:32,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:32,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:32,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:34:32,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:32,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:34:32,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:32,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:34:32,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:32,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:32,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:32,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:33,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:33,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:33,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:33,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:33,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,146 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:33,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:33,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:33,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,161 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:33,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:33,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,218 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:33,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:33,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,227 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:33,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:33,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:33,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:33,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 162 [2022-12-14 05:34:33,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,358 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:34:33,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 172 [2022-12-14 05:34:33,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,381 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 05:34:33,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 168 [2022-12-14 05:34:33,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,434 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:34:33,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 05:34:33,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 134 [2022-12-14 05:34:33,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:33,473 INFO L321 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-12-14 05:34:33,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 05:34:33,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:33,683 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 13 for LOIs [2022-12-14 05:34:33,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:33,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:33,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:33,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:33,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:33,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:33,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:33,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:33,720 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:38,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7544#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_sll_circular_append_~head#1.base| |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= |ULTIMATE.start_sll_circular_append_~data#1| (select (select |#memory_int| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 4)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| |ULTIMATE.start_sll_circular_append_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_#res#1.base|) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~head#1.base|) 1) (= |ULTIMATE.start_sll_circular_append_#in~data#1| |ULTIMATE.start_sll_circular_append_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_main_~last~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_sll_circular_append_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= 8 (select |#length| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~last~2#1.base|) 1) (< |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~last~2#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:34:38,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:34:38,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:34:38,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2022-12-14 05:34:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356459486] [2022-12-14 05:34:38,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:38,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 05:34:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 05:34:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1880, Unknown=2, NotChecked=178, Total=2256 [2022-12-14 05:34:38,634 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 23 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:34:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:38,905 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2022-12-14 05:34:38,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:34:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2022-12-14 05:34:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:38,906 INFO L225 Difference]: With dead ends: 78 [2022-12-14 05:34:38,906 INFO L226 Difference]: Without dead ends: 78 [2022-12-14 05:34:38,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=255, Invalid=2403, Unknown=2, NotChecked=202, Total=2862 [2022-12-14 05:34:38,906 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 279 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:38,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 546 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 417 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2022-12-14 05:34:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-14 05:34:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-14 05:34:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.5) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-12-14 05:34:38,908 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 39 [2022-12-14 05:34:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:38,908 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-12-14 05:34:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:34:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-12-14 05:34:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 05:34:38,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:38,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:38,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:39,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 05:34:39,110 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:34:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -375015689, now seen corresponding path program 1 times [2022-12-14 05:34:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:39,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693400074] [2022-12-14 05:34:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:34:39,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:39,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693400074] [2022-12-14 05:34:39,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693400074] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492475435] [2022-12-14 05:34:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:39,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:39,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:34:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:39,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 05:34:39,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:39,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:40,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 05:34:40,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:40,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:40,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 05:34:40,219 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-12-14 05:34:40,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:34:40,460 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:34:40,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2022-12-14 05:34:40,520 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:34:40,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2022-12-14 05:34:40,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 05:34:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:34:40,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:40,603 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2074 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_2074) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1)) is different from false [2022-12-14 05:34:44,713 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2074 (Array Int Int)) (v_ArrVal_2073 (Array Int Int))) (= (select |c_#valid| (select (select (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) v_ArrVal_2073) |c_ULTIMATE.start_sll_circular_append_~new_last~0#1.base| v_ArrVal_2074) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1)) is different from false [2022-12-14 05:34:56,101 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2080 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_append_~new_last~0#1.base_28| Int) (|v_node_create_~temp~0#1.base_66| Int) (v_ArrVal_2081 Int) (v_ArrVal_2074 (Array Int Int)) (v_ArrVal_2073 (Array Int Int))) (or (not (< |v_node_create_~temp~0#1.base_66| |c_#StackHeapBarrier|)) (< |v_node_create_~temp~0#1.base_66| |v_ULTIMATE.start_sll_circular_append_~new_last~0#1.base_28|) (not (= (select |c_#valid| |v_node_create_~temp~0#1.base_66|) 0)) (= (select (store |c_#valid| |v_node_create_~temp~0#1.base_66| v_ArrVal_2081) (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_66| v_ArrVal_2080))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) v_ArrVal_2073)) |v_ULTIMATE.start_sll_circular_append_~new_last~0#1.base_28| v_ArrVal_2074) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1))) is different from false [2022-12-14 05:34:56,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492475435] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:56,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131088376] [2022-12-14 05:34:56,103 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 05:34:56,103 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:34:56,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:34:56,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:34:56,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:34:56,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:34:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:56,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:56,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:56,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:56,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:56,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:56,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:56,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:34:56,285 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:34:56,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:34:56,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:56,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:34:56,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:56,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:56,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:56,443 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,444 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,445 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,445 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,446 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,491 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:34:56,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:34:56,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:56,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:56,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:56,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:56,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:34:56,641 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,642 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,644 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,644 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:34:56,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:34:56,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:34:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:56,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 117 [2022-12-14 05:34:56,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:56,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-12-14 05:34:56,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:56,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2022-12-14 05:34:56,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:56,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:56,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:57,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:57,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,075 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:57,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:57,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:57,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,097 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:57,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:57,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:34:57,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,191 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:57,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:57,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,201 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:34:57,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:34:57,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:34:57,350 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 05:34:57,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 34 [2022-12-14 05:34:57,371 INFO L321 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-12-14 05:34:57,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2022-12-14 05:34:57,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:57,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,446 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-12-14 05:34:57,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 36 [2022-12-14 05:34:57,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:57,482 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-12-14 05:34:57,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-12-14 05:34:57,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:57,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:34:57,633 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 05:34:57,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:34:57,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:34:57,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:34:57,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:57,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:34:57,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:57,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:57,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:57,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:34:57,684 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:35:04,241 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7940#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (or (not (= |ULTIMATE.start_sll_circular_append_~last~1#1.base| 0)) (not (= |ULTIMATE.start_sll_circular_append_~last~1#1.offset| 0))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~head#1.base|) |ULTIMATE.start_sll_circular_append_~head#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= (+ |ULTIMATE.start_sll_circular_append_~head#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~head#1.base|)) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= (+ |ULTIMATE.start_sll_circular_append_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~last~1#1.base|)) (not (= (select |#valid| |ULTIMATE.start_main_~last~2#1.base|) 1)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_sll_circular_append_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (or (= |ULTIMATE.start_sll_circular_append_~last~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|) |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|)) (and (= |ULTIMATE.start_sll_circular_append_~last~1#1.offset| |ULTIMATE.start_sll_circular_append_~head#1.offset|) (= |ULTIMATE.start_sll_circular_append_~last~1#1.base| |ULTIMATE.start_sll_circular_append_~head#1.base|))) (<= (+ |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 4) (select |#length| |ULTIMATE.start_sll_circular_append_~new_last~0#1.base|)) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_append_~last~1#1.base|) |ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_circular_append_~last~1#1.base|) |ULTIMATE.start_sll_circular_append_~last~1#1.offset|)) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~head#1.base|) 1) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (= |ULTIMATE.start_main_~last~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select |#valid| |ULTIMATE.start_sll_circular_append_~last~1#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~last~2#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:35:04,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:35:04,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:35:04,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 40 [2022-12-14 05:35:04,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680455958] [2022-12-14 05:35:04,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:35:04,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-14 05:35:04,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-14 05:35:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=4381, Unknown=47, NotChecked=408, Total=5112 [2022-12-14 05:35:04,243 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 40 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 05:35:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:05,737 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2022-12-14 05:35:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 05:35:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-12-14 05:35:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:05,738 INFO L225 Difference]: With dead ends: 95 [2022-12-14 05:35:05,738 INFO L226 Difference]: Without dead ends: 95 [2022-12-14 05:35:05,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=493, Invalid=6610, Unknown=49, NotChecked=504, Total=7656 [2022-12-14 05:35:05,740 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 312 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:05,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 617 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1229 Invalid, 5 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 05:35:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-14 05:35:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-12-14 05:35:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 73 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:35:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2022-12-14 05:35:05,742 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 39 [2022-12-14 05:35:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:05,743 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2022-12-14 05:35:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 05:35:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2022-12-14 05:35:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 05:35:05,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:05,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:05,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 05:35:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 05:35:05,945 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:35:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 79371418, now seen corresponding path program 1 times [2022-12-14 05:35:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:05,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46169220] [2022-12-14 05:35:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:35:06,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:06,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46169220] [2022-12-14 05:35:06,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46169220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:06,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878202944] [2022-12-14 05:35:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:06,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:06,432 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:06,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:35:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:06,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-14 05:35:06,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:06,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 05:35:06,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:06,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:06,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:35:06,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:06,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 05:35:06,888 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-12-14 05:35:06,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:35:07,197 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:35:07,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-12-14 05:35:07,268 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 05:35:07,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 05:35:07,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:07,359 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:35:07,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-12-14 05:35:07,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:07,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2022-12-14 05:35:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:35:07,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:35:08,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878202944] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016631834] [2022-12-14 05:35:08,133 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-12-14 05:35:08,133 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:35:08,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:35:08,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:35:08,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:35:08,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:35:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:08,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:08,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:35:08,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:08,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:08,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:08,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:35:08,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:35:08,317 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:35:08,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:35:08,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:08,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 05:35:08,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:08,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:08,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:08,470 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,471 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,472 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,473 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,475 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,520 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-14 05:35:08,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 197 [2022-12-14 05:35:08,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:08,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:08,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:08,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:08,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:08,674 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,675 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,676 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,677 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:35:08,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:08,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:35:08,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:08,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:35:08,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:08,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 252 [2022-12-14 05:35:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:08,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 05:35:08,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:35:08,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:35:08,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:08,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:08,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:08,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:08,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:08,942 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:08,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:08,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:08,961 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:08,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:08,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:35:09,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:35:09,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:09,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:09,019 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:09,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:09,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:09,029 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:09,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:09,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:09,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:09,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:09,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:09,299 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-12-14 05:35:09,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 45 [2022-12-14 05:35:09,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:09,346 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-12-14 05:35:09,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 45 [2022-12-14 05:35:09,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:09,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:09,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:09,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:09,471 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 13 for LOIs [2022-12-14 05:35:09,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:35:09,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:09,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:09,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:09,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:09,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:09,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:09,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:09,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:09,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:09,515 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:35:13,991 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8397#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (not (= (select |#valid| |ULTIMATE.start_main_~last~2#1.base|) 1)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= 0 |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |#NULL.base| 0) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (= |ULTIMATE.start_main_~last~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~last~2#1.offset|))' at error location [2022-12-14 05:35:13,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:35:13,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:35:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 35 [2022-12-14 05:35:13,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108564615] [2022-12-14 05:35:13,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:35:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 05:35:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 05:35:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=4193, Unknown=50, NotChecked=0, Total=4556 [2022-12-14 05:35:13,992 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 36 states, 30 states have (on average 2.2) internal successors, (66), 31 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:35:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:15,181 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-12-14 05:35:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 05:35:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 30 states have (on average 2.2) internal successors, (66), 31 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2022-12-14 05:35:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:15,182 INFO L225 Difference]: With dead ends: 97 [2022-12-14 05:35:15,182 INFO L226 Difference]: Without dead ends: 97 [2022-12-14 05:35:15,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=499, Invalid=5769, Unknown=52, NotChecked=0, Total=6320 [2022-12-14 05:35:15,183 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 678 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:15,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 521 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 976 Invalid, 3 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 05:35:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-12-14 05:35:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2022-12-14 05:35:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.490909090909091) internal successors, (82), 74 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:35:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2022-12-14 05:35:15,185 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 43 [2022-12-14 05:35:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:15,185 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2022-12-14 05:35:15,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 30 states have (on average 2.2) internal successors, (66), 31 states have internal predecessors, (66), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:35:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2022-12-14 05:35:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 05:35:15,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:15,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:15,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 05:35:15,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 05:35:15,387 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:35:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 79371419, now seen corresponding path program 1 times [2022-12-14 05:35:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:15,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514906457] [2022-12-14 05:35:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:35:16,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:16,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514906457] [2022-12-14 05:35:16,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514906457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:16,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062133943] [2022-12-14 05:35:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:16,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:16,568 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:16,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 05:35:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:16,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 87 conjunts are in the unsatisfiable core [2022-12-14 05:35:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:16,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:16,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:35:16,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:17,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 05:35:17,182 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 05:35:17,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-12-14 05:35:17,192 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 05:35:17,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 05:35:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:17,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-14 05:35:17,542 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 05:35:17,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 32 [2022-12-14 05:35:17,555 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:35:17,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 05:35:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:17,791 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:35:17,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 62 [2022-12-14 05:35:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:17,807 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:35:17,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 76 [2022-12-14 05:35:17,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:17,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:17,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:18,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2022-12-14 05:35:18,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 05:35:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 05:35:18,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:35:19,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062133943] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:19,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283299631] [2022-12-14 05:35:19,172 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-12-14 05:35:19,173 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:35:19,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:35:19,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:35:19,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:35:19,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:35:19,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:19,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:19,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:35:19,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:19,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:19,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:35:19,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:19,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 05:35:19,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,344 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:35:19,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:35:19,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:19,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:19,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,424 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:35:19,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 05:35:19,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:19,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:19,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:19,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:19,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2022-12-14 05:35:19,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-12-14 05:35:19,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2022-12-14 05:35:19,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:19,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:19,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:19,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,898 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:19,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:19,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,908 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:19,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:19,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:19,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:35:19,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:35:19,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:19,994 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:19,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:20,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:20,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:20,015 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:35:20,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:35:20,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:20,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:20,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:20,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:20,353 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-12-14 05:35:20,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 45 [2022-12-14 05:35:20,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:20,393 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-12-14 05:35:20,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 45 [2022-12-14 05:35:20,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:20,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:20,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-12-14 05:35:20,537 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 13 for LOIs [2022-12-14 05:35:20,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:20,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:35:20,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:20,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:35:20,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:20,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:20,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:20,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:35:20,583 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:35:25,912 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8850#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 5 |ULTIMATE.start_sll_circular_append_#in~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= |ULTIMATE.start_sll_circular_append_~data#1| 5) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_circular_append_#in~data#1| 5) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_append_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.base|) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (or (not (<= (+ |ULTIMATE.start_main_~last~2#1.offset| 4) (select |#length| |ULTIMATE.start_main_~last~2#1.base|))) (not (<= 0 |ULTIMATE.start_main_~last~2#1.offset|))) (<= 0 |ULTIMATE.start_sll_circular_append_~new_last~0#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |#NULL.base| 0) (<= |ULTIMATE.start_sll_circular_append_#in~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_circular_append_~last~1#1.offset|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (<= 5 |ULTIMATE.start_sll_circular_append_~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_circular_append_~head#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (= |ULTIMATE.start_main_~last~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_sll_circular_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~last~2#1.offset|))' at error location [2022-12-14 05:35:25,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:35:25,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:35:25,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 38 [2022-12-14 05:35:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165153866] [2022-12-14 05:35:25,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:35:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 05:35:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 05:35:25,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=4534, Unknown=1, NotChecked=0, Total=4830 [2022-12-14 05:35:25,914 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 39 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:35:28,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 05:35:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:30,359 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2022-12-14 05:35:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 05:35:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2022-12-14 05:35:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:30,360 INFO L225 Difference]: With dead ends: 121 [2022-12-14 05:35:30,360 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 05:35:30,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=531, Invalid=6606, Unknown=3, NotChecked=0, Total=7140 [2022-12-14 05:35:30,361 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1046 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:30,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 651 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1018 Invalid, 4 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 05:35:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 05:35:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2022-12-14 05:35:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 77 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:35:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2022-12-14 05:35:30,363 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 43 [2022-12-14 05:35:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:30,363 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2022-12-14 05:35:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 05:35:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2022-12-14 05:35:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 05:35:30,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:30,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:30,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 05:35:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 05:35:30,565 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 55 more)] === [2022-12-14 05:35:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1972998761, now seen corresponding path program 1 times [2022-12-14 05:35:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:30,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476950798] [2022-12-14 05:35:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:35:31,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476950798] [2022-12-14 05:35:31,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476950798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78431960] [2022-12-14 05:35:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:31,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:31,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:31,931 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeb6e45-4ba4-4813-9352-3ce1787a8b54/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 05:35:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:32,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 114 conjunts are in the unsatisfiable core [2022-12-14 05:35:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:32,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:32,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:35:32,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:32,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:32,148 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2532 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_2532) |c_#length|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 05:35:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 05:35:32,166 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:35:32,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:35:32,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:32,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 05:35:32,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 05:35:32,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:32,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:35:32,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:32,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 05:35:32,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-12-14 05:35:32,806 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 05:35:32,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 05:35:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:32,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 05:35:33,480 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 05:35:33,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 73 [2022-12-14 05:35:33,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:33,513 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-12-14 05:35:33,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 57 [2022-12-14 05:35:33,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:33,982 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-12-14 05:35:33,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 235 treesize of output 236 [2022-12-14 05:35:33,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:34,061 INFO L321 Elim1Store]: treesize reduction 78, result has 41.8 percent of original size [2022-12-14 05:35:34,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 227 treesize of output 240 [2022-12-14 05:35:34,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:34,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:35,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:35:37,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:37,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:38,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:35:38,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:36:18,571 WARN L233 SmtUtils]: Spent 17.03s on a formula simplification. DAG size of input: 357 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:36:19,732 INFO L321 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2022-12-14 05:36:19,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 374 treesize of output 339 [2022-12-14 05:36:20,351 INFO L321 Elim1Store]: treesize reduction 84, result has 67.8 percent of original size [2022-12-14 05:36:20,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 303 treesize of output 391 [2022-12-14 05:36:21,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19